Lock.



E. L .'TBIGH.

LOOK.

APPLICATION FILED \APR. 26, 1909.

956,000. Patented Apr. 26, 1910.

3 SHEETS-SHEET 1.

L W/incomes: @Imucnl'o:

E. L. THIGH.

LOCK.

APPLICATION FILED APB..26, 1909 65M} Patented Apr. 26, 1910.

8 SHEETS-SHEET 2.

E. L. TEICH.

LOCK.

APPLICATION FILED APR.26,1909.

956,000, Patented Apr. 26,1910.

3 SHEETS-SHEET 3.

F IE. i

O o r 1" 5 HE a 7 I P I A a n I W 4 Wbtmooca': 1 I I gwvewfoz To all whom it may concern:

ERNEST Ii. TEICH, OF ,NEW BRITAIN, CONNECTICUT ASSIG-NOR TO P. & F. CORBIN; 6F

NEW BRITAIN, .comvncrrou r, A.

Specification: of

UNITED, stapes PATENT OFFICE.

ORPORATION OF CONNECTICUT.

Let P n Patented Apr. 26, 1910.

1909. Serial No. 492,171.

Be it knownthat I, Ems'r L. TEICH, a citizen of the United States, residing at New Britain, county of'Hartford, State of Connecticut, have invented certain new and useful Improvements in Locks, of which the following is a full, clear, and exact description. p

My invention relates to improvements in looks and is particularly concerned with improved mechanism for holding a spring-protraeted locking bolt or latch in retracted position by means of the key bolt operating mechanism. A

In devices of this character, as ordinarily constructed, the latch or bolt, usually the Spring actuated knob latch,- is held in retracted position by means of a air of push buttons extending through the ace plate of the lock and arranged to operate in such manner that when the latch is retracted, the pressing'in of one of said buttons will retain the latch in its retracted position, whereas. the pressing in of the other of said buttons will serve to release the latch and permit it to be projectedrby means of its spring. In these cases however, it is necessary to retract the latch y means of the knob and then operate one of the buttons to retain the same in such retracted position."This,of.course necessitates also the open'ipg of the door, inasmuch as these buttons are arranged in the faceplate of the lock.'

It is in some cases desirable that the door be provided with a stationary knob on the outside and that the opening of the door from the outside may only be efiected by. means of a key, whereas opening from the inside may be effected by means of a knob which actuates the usual roll-back and spring-latch, and it is also desirable to have, in conjunction with such construction of lock, means for retracting the springlocking boltby meanspf a key in such manner that the key inay' be withdrawn and the latch retained in retracted position. By this means, in the case, for exam le, of schools, the jan-. itor may unlock the oor from the outside at opening of school and, while the latch is still retracted, withdraw the key, leaving the door free to be opened from both the inside and the outside. On the other hand, in case it is desirable that the door, for example, of a sc'hoolroom, may be opened only from 'the' inside, the latch may be eft in projected pofrom the outside by means of a key, while locking mechanism may be positioned upon the means of the usual as des red.

,- constructing this lock 0 er'ating mechanism that it may'beadapte to be used either with a so-called" handed lock or right and left-hand lock.

With these and other objects in view, the invention consists in the construction and arrangement of parts, preferred embodiments of which are illustrated in the accompanying drawings in which, Fi ure l is a view of a portion of a-socalled handed lock, the cover-plate being removed to disclose. the lock mechanism. Fig. 1 shows in detail -a part employed-in this lock mechanism. HFi 2 is a corresponding view oi a so-ca led right and trate three diiterent steps in the movement of the locking cams, which are employed in of one of the locking cams shown in Figs. 2 to 5 inclusive. Fig. 7 comprises an edge and face view of another of the locking cams, illustrated in Figs. 2 to 5 inclusive. Fig. 8 is an end view of the cylinder plug of a so-called cylinder lock. Fig. 9 is a side elevation thereof. Fi 10 comprises an edge view and opposite ace views of a modified form of locking cam. Fig. 11 comprises an edge and face view of another -form of locking cam employedin conjunction with that illustrated in "Fi .10. Fig.

form of myzinvention as applied to a so-' called handed lock andih which the locking-cams are not reversible. Figs. 13, 1d and 15 illustrate three different steps in the movement of the locking'cams employed in the construction illustrated in Fig. 12.

In the embodiment of my invention here- 'in selected for'illustration, I employ the so-called cylinder type of lock aving a at the same time it may be readily opened lsition, whereby the door may only be opened v .and operated from either side of the door,

The invention further contemplates so left-hand lock. Figs. 3, 4 and 5 illusthe lock construction shown in Fig. 2. Fig. 6 comprises edge and face views respectively 10') 12 is a view similar to Fig. 1 o a modified I latch operating cam arm, which actuated 1 from the cylinder lug, which in turn is operated or rotated y means of the key.

Referring particu fly to theconstruction illustrated in-Fig. 1, the lock comprises the casing 1, havin suitably mounted therein a spring latch-ho t 2, including a bolt shank 3 and a spring 4, said spring being interposed between the head .of the bolt and the usual abutments 5 on the casing. The rear end of the bolt shank 3 carries a cross head' 6 having a beveled forward extension '7 adapted to be engaged and actuated by the locking cam arm of the cylinder lock. In the ordinary construction of cylinder lock at present in use, a single locking cam' arm is fixed upon the inner end of the cylinder plug, so that, upon turning the plug by means of the key, said arm will operate to retract the latch. In so doing, however,

' iwhen sai c'am arm has completed its travel for retracting the bolt, the cylinder plug lwill have made one complete revolution, {thereby returning to its initial position, and, }by bringing the pin-tumbler mechanism into .alinement, permitting the withdrawal of the key While at the same time the locking-cam .is held in latch retracted position. Infthe construction particularly illustrated in Fig. 1, this two part locking cam comprises a rotary member 8, which is illustrated in de; tail in Fig. 1, and consists of a body portion fhaving a cam locking projection 9. The

Efitover the end of the cylinder plug of the }lock, the latter being made to project Islightly beyond the rear ofthe cylinder casing. The second portion of the locking cam consists of the member- 11, having an oblong 'ing projection 13 on the rearend of the cylinder plug, through which projection 13 Ethe keyhole 14 extends. Said member 11 is provided with peripheral. shoulders 15-45 adapted to engagea pinor projection 16 upon the cam member 8 when the second member 11 is properly operated from the cylinder plug bv' the key.'

Inasmuch as the cam member 8 is'rotatably mounted upon the c linder plug, it is obvious that when; said p 11g is rotated by means of the key, the member ll'will rotate independently of the cam member 8 until the lower shoulder 15, as shown in Fig. 1, has been brought into engagement with the !body portion has an aperture 10 adapted to {opening 12. which fits over :1 correspond-' projection 16 on the member 8. Continued trac'ted the latch, as described, the cylinder plug will have made one complete revolution and hence will be in POSltlOIPtO permit removal of the key, and upon such removal of the key, the in tumblers of the lock will serve to hold t e cam projection 9 in the path of the projection 7 of the retracted latch bolt and consequently hold the bolt retracted against its sprin 4. The shoulders- 15 of the member 11 in t e construction just described are so positioned and proportioned with respect to theprojection 16 upon the member 8 that this cylinder locking mechanism may be so assembled as to permit its use upon the reverse sides of the casing 1.

This is efi'ected by detaching'the member 11 from the cylinder plug and reversing its position "thereon, while at the same time the projection 16 on the member 8 is shifted from its threaded aperture 16, as illustrated in Figs. 1 and 1, tol6", by which construction the cam member 9 may be actuated in the opposite direction when the c linder lock casing is inserted in a suita le aperture in the opposite side, of the main lock casing.

In Fi 2 is illustrated a form of the invention in which it is employed with a socalled right or left hand lock, or one which may be so attached that the door may be closed in either direction. In this construction the lock comprises the usual casin 17 having suitably mounted therein a locking bolt 18,-the shank of which bolt has upon its rear end a cross head 19 to' limit the outward throw of the bolt by coming contact with projections 2020 on the caslng. The belt shank also is substantiall symmetrical in cross section and is provide with a collar 21 adapted to be engaged by'one arm 22 of the bell crank lever pivoted at 23 ppm the casing, said lever having a second arm 24 arranged to lie in the 'path of the cam arm of thecylinder locking cam. In this construction also the locking'cam is formed in two parts and comprises the cam member 25, which: is substantially the same in eneral form as the'member 8, illustrate in Fig. 1, and has a cam arm 26. Said memher is rotatable upon the projecting end of the lc ylinder plug of the cylinder lock. A second or cam actuating member 27 is fitted over the key hole projection 28 of the cylin-' 'de'r plug, which member 27 is provided with shoulders 28 and 29 adapted to en age a pin or projection 30 fixed on the mem er 25. I Since the member 27 is fixed to the cylinder by said lever and bolt will be moved to the dotted line position illustrated in Fig. 2. At the same time, when the parts-are in this position, the cylinder plug of the cylinder lock will have accomplished a complete rotation and will be in a position to permit of the withdrawal of the key, and such withdrawal will serve to retain the cam arm 26' in contact with the lever arm 24, to hold the bolt 18 in retracted positionl This 'form o[ lock also may be used on reverse sides of .the lock casing, so that the cylinder lock may pro ect from either side of the door as desired. To this end the member 27 is made removable and reversible to position its shoulder. initially upon the opposite side of the pin or projection 30, and at the same time, the pin 31, against which the cam arm 26 rests when in normal position, may be shifted to the o posite side of the cylinder lock casing an mounted at the point 32 thereof, whereupon the parts will be assembled in a manner to permit the cylinder lock to be inserted within the. opposite side of the main lock casing 17.

In order tofully illustrate the operation of the locking cam members 25 and 27 illustrated in Fig. .2, the same are shown in different positions in Figs. 3, 4 and 5.

Fig. 3 illustrates the initial sit-ion of the cam members with the shoul er 28 of the member 27 against the pin or projection 30.

Fig. 4 illustrates the relative positions of the members 25 and 27 after t e cylinder plug has been given a partial rotation and the second shoulder 29 of the member 27 has been brought around and into engagement with the pin or projection 30 on the mem ber 25.

Fig. 5 illustrates the final position of the locking cams when the cam projection 26 is moved to actuate the lever and consequently to retract the latch. By comparison between Figs. 3 and 5, it willbc seen that the position of the key hole in both figures, is the same, and that the cylinder plug is in position to permit insertion or removal of the he Figs? 6 and 7 illustrate in detail in detached views the members 25 and 27 respectively, employed in Fig. 2.

In Fig. 12 is illustrated a form of my invention which is adapted to be used with a socalled handed lock and which is'not reversible as in the case of the constructions heretofore described. This construction, however, is of advantage for the reason that it provides for the compact positioning of the arts within the periphery of the cylinder ock casing, while'at the same time, by reason of the eculia-r form andmounting of the cam loc ing member, very considerable leverage is secured in the actuation of the locking bolt; I

' Referring to the parts illustrated in Fig. 12, the lock comprises the casing 1 havin mounted therein a locking bolt-2, whic bolt has a shank 3' and a spring '4 interposed between the head of the bolt and suit able retaining projections 5 on the casing. The shank 3 is also provided with across head 6, having an extension -7 adapted to be engaged by the locking cam of the cylinder lock. The cam member in this form 'of my invention consists of the ring like body portion 33, Fig. 11 having a camprojection 34 extendin su stantially tan 'entially therefrom, w ich projection may e ofiset or raised above the plane of the body portion 33, if desired, 'as illustrated zit-35, to

provide the requisite thickness for the cam projection 34. The cam actuating member consists of a body portion 36, Fig. 10, having an elongated opening 37 adapted to fit over the key hole projection 38 at the rear end of the cylinder lug, Fig.- 12. The member 36 has the shou ders 39 and 40 adapted to engage the front edge 41 and rear end 42 respectively of the cam finger 34 during the actuation thereof. In the operation of this form of my invention, the cam actuating member 36 is rotated by means of the rotation of the cylinderplug' until the shoulder- 40 is brought into contact with the rear 42 of the cam finger 34. This position of the parts is illustrated in Fig. 14, wherein it will be seen that the cylinder plug has already made a partial rotation before the latch actuating cam finger 34 has begun its movement. Further rotation of the cylinder plug will bring the cam finger 34 around to the position illustrated in Fig. 15, or in dotted'outline Fig. 12, at which time it will have engaged the projection 7' upon the cross head of the latch bolt and will have withdrawn the latch to its retracted position, as shown in Fig. 12. B tween Figs. 13 and 15, it will be seen that the initial and final positions of the cylinder plug in the retraction of the latch are the same,and consequently the key may be .removed or inserted in the cylinder lock at said final position of the cylinder plug. Consequently, when the key is withdrawn, the latch willbe retained by the cylinder lock in its retracted position.

\Vhile I have shown the various parts such as the cam members and the cylinder plug as so' constructed that in some instances these parts are prepared for assembling by comparison bethey may be merely stamped up out of 7 metal blanks.

varied in detail and relative arrangement of parts without departing from the spirit or scope thereof.

What I claim is:

1. Ina lock mechanism, the combination with a casing and a cylinder lock mechanism mounted therein, of a spring protracted latch bolt adapted to be retracted by said cylinder lock mechanism and to be retained in retracted'position by the locking mechanism of said cylinder lock mechanism.

2. In a lock mechanism, the combination with a casing, of a spring protracted latch bolt mounted therein, a cylinder lock mechanism mounted on said casing, a locking cam in said cylinder lock mechanism, and a lost motion connection between the cylinder plug and said cam whereby said plug may be rotated to retract said bolt and to permit withdrawal of the key while said bolt is held in retracted position.

3. In a lock mechanism, the combination with a casing and a spring protracted latch bolt mounted therein, of a cylinder lockv mechanism mounted in said casing and having a cam arm adapted to retract said bolt, a cylinder plug and a lost motion connection between said plug and said cam arm arranged to permit the turning of said cylinder plug to initial position upon retraction of said bolt whereby the key may be withdrawn and the bolt retained in retracted position.

4. In a lock mechanism, the combination with a casing having a spring protracted latch bolt mounted therein, of a cylinder lock mechanism mounted in said casing and having means to retract said bolt, said means being arranged to permit a complete rotation of the key whereby the same may be withdrawn, and to hold the latch bolt at the end of such complete rotation and upon withdrawal of the key in retracted position.

5. In a lock mechanism, the combination with a casing having a spring-protracted latch bolt mounted therein, of a cylinder lock mechanism mounted in said casing. a bolt retracting cam pivotally mounted upon the cylinder plug of said mechanism, and a shouldered member rotatable with said plug to actuate said cam to retract said bolt, the connection between said fixed member and said cam member being such as to permit a inder lock mechanism mounted in saidcasing, a bolt retracting arm pivotally mount ed'on the cylinder plug of said cylinder lock 'meqhanism, and means carried by said plug to actuate said arm, said means being arranged to permit partial rotation of said plug before'movement of said arm is begun,

whereby, when said arm has reached the limit of its retracting position, said plug shall have made a complete revolutionwhereby the key may be withdrawn and said latch bolt retained in retracted position by said arm.

7. In a lock mechanism, the combination with a casing having a spring protracted latch bolt mounted therein, of" a cylinder lock mechanism mounted in said casing, having means to retract said bolt, said bolt retracting means being so arranged as to require a complete revolution of the cylinder plug to completely retract said bolt, whereby, upon withdrawal of the key, the bolt will be retained in retracted position by said bolt retracting means.

8. In a lock mechanism, the combination with a casing having a spring protracted latch bolt mounted therein, of a cylinder lock mechanism mountedin' said casing, a bolt retracting arm pivotally mounted upon the cylinder plu of said lock, a stop' on said arm, a shouldered member fixed upon said cylinder plug and having shoulders arranged to engage said stop to actuate said arm: to and from bolt operating position, saidshoulders being so arranged as to permit a certain amount of lost motion of said cylinder plug during the actuation of said arm, whereby said plug may be permitted a complete revolution during the retraction of the bolt to permit withdrawal of the key while said arm retains said bolt in retracted position. I

9. In a lock mechanism, the combination with a casing havinga spring protracted latch bolt mounted therein, of a. cylinder lock mechanism mounted in said casing, having means to retract said bolt and to retain said bolt retracted when the cylinder plug is rotated to initial position and upon withdrawal of the key, said bolt retracting and retaining means being reversible to adapt it to right and left-hand locks.

10. In a lock mechanism, .the combination with a casing having a latch bolt mounted therein, of a cylinder lock mechanism mounted in said casin a bolt retracting arm pivotally mounted eupon the cylinder plug of said cylinder lock mechanism, a shouldered actuating member .fixed upon said cylinder plug to actuate said bolt retracting member, said bolt retracting member and said fixed member being so constructed as to. permit reversal thereof to adapt the cylinder lock mechanism to right and left-hand looks. I

1o inder plug, said parts being so arran ed as plug before the actuation of the bolt retracting arm is begun, whereby, upon C0111- plgtioiiof the bolt retracting operation, the cylinder plug will return to initial position 15 to permit withdrawal of the key whereb t (2' bolt maybe retained in retracted pos1- tion by saidre i-wti g ERNEST L. TEIGH. Witnesses:

LEONARD B. MAL-Loni, AGNES O. HEAL'EY.

. 11. In alock mechanism, the combinati n with a casing, having a prin protracted latch bolt mounted therein, 'p a cylinder lock mechanism mounted in said casing and 5 havin a two-part cam mechanism to retract said alt, said two-part mechanism comprising a bolt retracting arm pivotally inounted upon the cylinder plug, and an 1'6 permit a partial rotation of-tho cy inder 

